Malicious PDF — malware analysis report

Static analysis result for SHA-256 4323752417f2a5db…

MALICIOUS

PDF

49.9 KB Created: 2021-06-08 23:03:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1be7e9c81cadcd86b3377eddf5598422 SHA-1: 8436c9047dbb6e773fd8bdeb292b86580b54cf69 SHA-256: 4323752417f2a5db37f33a322307f7d63bfb04d4e151c1d05cf57741d2fe11b3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for free game currency, directing users to a malicious redirector URL. The presence of embedded URLs and a critical heuristic firing for malicious redirector links strongly suggests a phishing or scam attempt. While no scripts were explicitly extracted, the document's structure and embedded links are indicative of a malicious workflow designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.tw/app/431946152/hack-para-murder-mistery-2-2021-roblox-game-hack In PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/freerobux-co_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/how-often-pubg-uc-advance_GM1330123889.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/free-pe_GM479516143.pdfIn PDF document text
    • https://www.modestuae.com/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000053d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53D2 32760 bytes
SHA-256: 4347d2ea77337ba1832ba21f127f971e8ea6b3af3e54109a13af904a8ee08101
font_01_sfnt_off00009ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA2 19652 bytes
SHA-256: ba47736a222013a4cff476299978a4c8d6421005d1ede4d66601722456e3d9c5

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